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PDF for Introduction to Photography 01

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01.intro 01.intro Presentation Transcript

  • INTRODUCTION TO PHOTOGRAPHY
  • What Is Photography?The process and art of creating still picturesDerived from the Greek words Photos (light) and Graphis(painting/drawing).Technique and art of painting or drawing with light.
  • How Is A Photograph Taken?Image is recorded on a light sensitive material (digital sensor).Various parts of camera help to control the amount of lighthitting the material.These are: 1. Aperture 2. Shutter Curtain (controls the shutter speed) 3. ISO setting View slide
  • Common TermsExposure - The act of taking a photograph by exposing the sensor to lightAperture - A hole found in the lens that controls the amount of light thelens to hit the sensor. Bigger hole = more light entering the camera.Denoted by f/numberShutter Speed - The speed a shutter “curtain” opens and closes to controlamount of time the “curtain” remains open to allow light in. Longer shutterspeed = more light entering the camera. Denoted by 1/numberISO - Sensitivity of sensor to light. Higher ISO = more sensitive to light.Usually denoted by numbers from 100, doubling at each stop (e.g. 100,200, 400, 800 etc)Subject - The “hero” of your photograph. The person/object you are takinga photograph of. View slide
  • Common TermsFocal length - Focal length refers to the distance between thephotographer and her subject. It is also the number found on your lens, inmm.Composition - The art and science of placing elements within aphotograph to “tell a story” to the viewer.Aperture Priority mode - User sets aperture, camera then selects amatching shutter speed to ensure correct exposure.Shutter Priority mode - User sets shutter speed, camera selectsa matching aperture to ensure correct exposure.Manual mode - User selects both shutter speed & aperture to ensurecorrect exposure
  • Parts of a DSLR
  • Focal LengthNumbered in mm on the camera lens.Angle of view of your camera and how close the subject ofyour photograph appears to the viewer.Range of numbers, e.g. 18mm - 55mm means lens covers18mm to 55mm focal lengthA lens with only 1 focal length is a prime lens while a rangeof focal lengths on the lens means it is a zoom lens
  • Focal Length Field of View
  • Focal Length Comparison
  • Types of Camera LensesUltra wide angle - A lens with focal length that is less than 24mmWide angle - A lens with focal length between 25mm to 35mmNormal/Standard - A lens with focal length of 50mm. It is called as suchbecause the field of view of a 50mm is the same as that of a human eye.Telephoto - A lens with a focal length from about 70mm to 300mmSuper Telephoto - A lens that has a focal length of more than 300mm
  • Lens - Prime or Zoom?Prime lens:Usually extremely high qualityBig maximum aperture (e.g. f/1.8)Most prime lenses are expensiveNeeds different lenses to cover a range of focal lengthsZoom lens:Usually not as high qualityUsually a range of maximum aperture (e.g. f/4 - f/5.6)*Most zoom lenses are reasonably pricedDoes not need a large number of lenses to cover a range of focallengths*This means the lens has a maximum aperture of f/4 at 18mm and a maximumaperture of f/5.6 at 55mm for an 18-55mm zoom lens.
  • How does a camera work? Image reflected off mirrors & pentaprism onto viewfinder through the lens Mirror lifts up to allow light to hit the digital sensor
  • How to hold a camera The wrong way!
  • How to hold a camera The correct way
  • How to hold a camera Other positions
  • How to hold a camera Other positions
  • How to hold a camera Other positions
  • The End The End